Improvement in car-wheels



W. GOODMAN.

Car Wheel.

No. 110,563. Patented Dec. 27, 1870.

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Letters Patent No. 110,563, dated December 27, 1870.

IMPROVEMENT IN CAR-WHEELS.

The Schedule referred to in these Letters Patent and making part of the same.

To all to whom these presents shall come.

Be it known that I, WILLIAM -GOODMAN, a subject of the Kingdom of Great Britain, but at present residing in Boston, in the county of Suffolk and State of Massachusetts, have made an invention of certain Improvements in Elastic-Bearing Gar-IV heels; and

do hereby declare the following to be a full, clear, and

cxacudescription thereof, due ref'erence being bad to the accompanying drawing making part'of this specification, and in which- Figure 1 represents a broad face elevation;

Figure 2, a vertical and longitudinal, and

Figure 3 a vertical and transverse section of a carwheel provided with my invention.

It is within my knowledge that various plans are nowiu existence, and in fact in use, to combine with a car-wheel an elastic bearing between itself and its axle, and this device, while adding to this class of iu ventions, possesses simplicity, strength, an great durability, combined with effective operation, the purpose in originating such invention having been to avoid the complexity of parts and liability to derangement and injury now common to others of like character.

In my present invention the elastic material is interposed at a convenient point between the axle-bearing and the rim of the wheel, by which the concussions, thrusts, and strains upon a railway car are greatly modified and the comfort of the traveler greatly enhanced.

In carrying out this invention I produce a carwheel, A, of cast-iron, in the ordinary manner, with the exception that its journal-receiving orifice or hearing a, is enlarged to about three times the usual size.

The inner boundary or periphery of this opening is channeled or grooved as shown at l), andin such groove I deposit a ring, 0, of India rubber or other equivalent substanee possessing the desired elasticity.

In pursuance of my invention I produce three or more segmental blocks, 6 c c, of metal or other suitable material, the combined width of such blocks being sufiicient to occupytheinner circumference of the orifice a, with the exception ofthat occupied by a series of tapering keys, (Z (Z d, which are forcibly inserted-between evcry two adjacent segmental blocks.

The radial length of the blocks and keys is such as to produce an opening at the center. of the wheel for reception of the axle-journal l, as shown in the drawing.

teat, f, to pass through the elastic band or ring 0, 'and extend a short distance into the met-a1 of the wheel, for the purpose of insuring the proper position of such blocks and of the ring, and prevent rotation of either under the torsive strain to which they will be subjectcd.

In constructing a wheel according to mypresentinvention a band or ring, c,-ot India-rubber or its equivalent, is-deposited' within thebottom of the annular grooveb, and extending throughout the length of the same. II ext the segmental blocks are inserted in place, as'shown in the drawing, and the keys (I driven tightly between them, this last not serving to produce a solid and durable union of the parts, the whole be ing bound together by bolts or pins 9 g g, which, as represented in the drawing, are driven into holes h,

860., bored between each block and oneof its Zldljilr cent keys.

The orifice is then to be bored out concentric with Claim.

I claim- The general combination and arrangement of the elastic band 0, the segmental blocks 0 c c, and keypieces d (l cl, the latter-mentioned blocks and keys being confined together by the bolts or pins g g g, and the whole operating in connection with the annular groove 7) of the body of the wheel to produce results before stated.

WILLIAM GOODMAN.

Witnesses Fnnn. CURTIS, Enw. Gnmnnrn.

, Each segmental blocke is provided with a spur or 

